Airfoil blade and method for its manufacture

Details Airfoil blade and method for its manufacture Airfoil blade and method for its manufacture

F - Mech Eng,Light,Heat,Weapons

04

D

F04D 29/28 (2006.01) F04D 29/30 (2006.01)

Patent

CA 2388292

This centrifugal blower fan wheel has extruded-aluminum airfoil blades. The preferred blades have two hollow regions, separated by an angled mid-load support beam, inside the blade. The nose section of the blade (at the leading edge) and the tail section of the blade (at the trailing edge) have open semi- circular grooves which face the adjacent hollow sections and are designed to accept thread cutting or thread forming screws for attachment of the blade to a ring-shroud and back-plate.

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